GB955939A - Hydraulic cylinder with adjustable cushioning means - Google Patents

Hydraulic cylinder with adjustable cushioning means

Info

Publication number
GB955939A
GB955939A GB4159162A GB4159162A GB955939A GB 955939 A GB955939 A GB 955939A GB 4159162 A GB4159162 A GB 4159162A GB 4159162 A GB4159162 A GB 4159162A GB 955939 A GB955939 A GB 955939A
Authority
GB
United Kingdom
Prior art keywords
piston
nipple
head
cylinder port
port
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4159162A
Inventor
Milton Lloyd Benjamin
David Dean Walker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erickson Tool Co
Original Assignee
Erickson Tool Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Erickson Tool Co filed Critical Erickson Tool Co
Priority to GB4159162A priority Critical patent/GB955939A/en
Publication of GB955939A publication Critical patent/GB955939A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/223—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having a piston with a piston extension or piston recess which completely seals the main fluid outlet as the piston approaches its end position

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)

Abstract

955,939. Hydraulic motors. ERICKSON TOOL CO. Nov. 2, 1962, No. 41591/62. Heading F1P. A hydraulic cylinder 6 is closed at each end by a head 8 and has a reciprocable piston 3 retarded as it approaches the head by two flow restrictors, the first comprising a cylindrical bore 11 of the piston 3 which coacts with a tapered cushioning nipple 19 of the head 8, and the second comprising an adjustable restriction 20 disposed between the cylinder port 16 and passages 18 in the nipple 19. In the position shown pressurized fluid enters through the upper cylinder port 16 and passes to three passages 24 each having a check valve 25 and into a chamber 14 at the bottom of the cylindrical bore 11, whereby the piston moves downwardly being further assisted by fluid passing through upper openings 15 and 18. Fluid within the space below the piston is forced out through lower openings 15 and 18 leading to the lower port 16, and at the end of the stroke the lower tapered nipple 19 enters the bore 11 to retard the piston movement The return stroke is identical, pressurized fluid being supplied through the lower cylinder port 16. The piston 3 has adjustable U-cup packings 4 and is provided with a piston rod 1 having a gear rack 2 adapted to mesh with a gear segment of an indexing device (not shown). Specification 676,901 is referred to.
GB4159162A 1962-11-02 1962-11-02 Hydraulic cylinder with adjustable cushioning means Expired GB955939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4159162A GB955939A (en) 1962-11-02 1962-11-02 Hydraulic cylinder with adjustable cushioning means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4159162A GB955939A (en) 1962-11-02 1962-11-02 Hydraulic cylinder with adjustable cushioning means

Publications (1)

Publication Number Publication Date
GB955939A true GB955939A (en) 1964-04-22

Family

ID=10420403

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4159162A Expired GB955939A (en) 1962-11-02 1962-11-02 Hydraulic cylinder with adjustable cushioning means

Country Status (1)

Country Link
GB (1) GB955939A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003523A1 (en) * 1988-09-23 1990-04-05 Zahnradfabrik Friedrichshafen Ag End position damping system
EP1199480A3 (en) * 2000-10-16 2003-11-19 Luciano Migliori Compact pneumatic cylinder, with cushioning device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990003523A1 (en) * 1988-09-23 1990-04-05 Zahnradfabrik Friedrichshafen Ag End position damping system
EP1199480A3 (en) * 2000-10-16 2003-11-19 Luciano Migliori Compact pneumatic cylinder, with cushioning device

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